On the other hand it is a really good strategy to pump coins using your authority, so it also brings him money. Nevertheless, people have understood that, so price doesn’t change so sugnificantly because of his tweets.
So you think he has not benefited from that pump? I guess the intention was really to make money because if he has a genuine intention which would want to help the market grow, he should have not shill a meme coin that has no fundamentals.
Money and profit are main reasons for everything as usual but as people mention one of main reasons is ego. He feels important and better than others in crypto when prove self he can make big impact with tweet and few words.